MATLAB: Writematrix: Invalid parameter name: WriteMode.

Question

Matlab R2019b

For some reason this doesn't work for me.

I'm following the example here:

https://se.mathworks.com/help/matlab/ref/writematrix.html

M2 = [5 10 15 20 25; 30 35 40 45 50];
writematrix(M2,'M.xls','WriteMode','append');

Result:
Error using writematrix (line 134)
Invalid parameter name: WriteMode.

Using the example with no extra parameters

writematrix(M2,'M.xls');

Works without problem

[Edit]

From the page: Introduced in R2019a

Answer 1

WriteMode was not available in r2019a. Here's the documentation for writematrix r2019a.